Pinpoint Test J: The Rear Video Is Inoperative
Parking Aid - Video
Pinpoint Tests
Pinpoint Test J: The Rear Video Is Inoperative
Normal Operation
With the ignition switch in the RUN position, voltage is supplied to the rear video camera.
For vehicles without navigation, with the gear selector in REVERSE (R) position, a reverse voltage signal is sent to the auto-dimming interior mirror supplying power to the display in the mirror. The video camera signal is sent to the auto-dimming interior mirror. The video signal from the video camera displays an image on the LH side of the auto-dimming interior mirror.
For vehicles with navigation, with the gear selector in the REVERSE (R) position, a reverse signal is sent from the IPC to the Audio Control Module (ACM) over the Medium Speed Controller Area Network (MS-CAN), enabling the system. The video signal from the video camera displays an image on the Front Display Interface Module (FDIM).
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Video camera
- Auto-dimming interior mirror (without navigation)
- FDIM (with navigation)
PINPOINT TEST J: THE REAR VIDEO IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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J1 VERIFY VEHICLE EQUIPMENT - NAVIGATION
- Check the vehicle for navigation.
- Is the vehicle equipped with navigation?
Yes
GO to J7.
No
GO to J2.
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J2 CHECK THE REVERSING LAMPS OPERATION
- Check the operation of the reversing lamps.
- Do the reversing lamps operate correctly?
Yes
GO to J3.
No
REFER to Lighting and Horns.
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J3 CHECK FOR VIDEO CAMERA SIGNAL
- Ignition OFF.
- Apply the parking brake.
- Ignition ON.
- Select REVERSE.
- Observe the auto-dimming interior mirror.
- Does the auto-dimming interior mirror momentarily display a blue screen?
Yes
GO to J9.
No
GO to J4.
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J4 CHECK THE AUTO-DIMMING INTERIOR MIRROR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Auto-Dimming Interior Mirror C9039.
- Ignition ON.
- Measure the voltage between the auto-dimming interior mirror C9039-1, circuit CBP41 (BU), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to J5.
No
VERIFY the Smart Junction Box (SJB) fuse 41 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Diagrams By Number. TEST the system for normal operation.
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J5 CHECK THE AUTO-DIMMING INTERIOR MIRROR REVERSE INPUT CIRCUIT
- Apply the parking brake.
- Select REVERSE.
- Measure the voltage between the auto-dimming interior mirror C9039-2, circuit CLS10 (GN/BN), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to J6.
No
REPAIR the circuit. TEST the system for normal operation.
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J6 CHECK THE AUTO-DIMMING INTERIOR MIRROR GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the auto-dimming interior mirror C9039-3, circuit GD139 (BK/YE), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new auto-dimming interior mirror. REFER to Mirrors. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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J7 VERIFY THE REVERSE SIGNAL INPUT
- Apply the parking brake.
- Ignition ON.
- Select REVERSE.
- Check the IC message center PRNDL indicator.
- Does REVERSE (R) appear in the message center?
Yes
GO to J8.
No
REFER to Automatic Transmission/Transaxle &/or Transmission Control Systems to diagnose the PRNDL.
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J8 CHECK THE FDIM DISPLAY
- Select REVERSE.
- Observe the FDIM display.
- Does the FDIM display "PLEASE CHECK SURROUNDINGS FOR SAFETY" at the top of the display screen?
Yes
GO to J9.
No
INSTALL a new FDIM. REFER to Accessories and Optional Equipment. TEST the system for normal operation.
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J9 CHECK THE VIDEO CAMERA VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Disconnect: Video Camera C4357 (Fusion/MKZ) or C4234 (Milan).
- Ignition ON.
- For Fusion/MKZ, measure the voltage between the video camera C4357-1, circuit CBP35 (YE/GY), harness side and ground.
- For Milan, measure the voltage between the video camera C4234-1, circuit (RD), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to J10.
No
VERIFY that the SJB fuse 35 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Diagrams By Number.
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J10 CHECK THE VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- For Fusion/MKZ, measure the resistance between the video camera C4357-3, circuit GD171 (BK/GY), harness side and ground.
- For Milan, measure the resistance between the video camera C4234-6, circuit (BK), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to J11.
No
REPAIR the circuit. TEST the system for normal operation.
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J11 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO GROUND
- For Fusion/MKZ, measure the resistance between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and ground and the video camera C4357-7, circuit RMP19 (BN/VT), harness side and ground.
- For Milan, measure the resistance between the video camera C4234-4, circuit (WH), harness side and ground; and between the video camera C4234-5, circuit RMP19 (BK), harness side and ground.
- Are the resistances greater than 10,000 ohms?
Yes
GO to J13.
No
GO to J12.
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J12 CHECK THE AUTO-DIMMING INTERIOR MIRROR (WITHOUT NAVIGATION) OR FDIM (WITH NAVIGATION) FOR AN INTERNAL SHORT
- Disconnect: Auto-Dimming Interior Mirror C9039 (Without Navigation) or FDIM C2410 (With Navigation).
- For Fusion/MKZ, measure the resistance between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and ground and the video camera C4357-7, circuit RMP19 (BN/VT), harness side and ground.
- For Milan, measure the resistance between the video camera C4234-4, circuit (WH), harness side and ground; and between the video camera C4234-5, circuit RMP19 (BK), harness side and ground.
- Are the resistances greater than 10,000 ohms?
Yes
For vehicles without navigation, INSTALL a new auto-dimming interior mirror. REFER to Mirrors.
For vehicles with navigation, INSTALL a new FDIM. REFER to Accessories and Optional Equipment. TEST the system for normal operation.
No
REPAIR the circuit in question. TEST the system for normal operation.
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J13 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VIDEO SHIELD
- For Fusion/MKZ, measure the resistance between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and the video camera C4357-4, circuit DMP19 (BK), harness side.
- For Fusion/MKZ, measure the resistance between the video camera C4357-7, circuit RMP19 (BN/VT), harness side and the video camera C4357-4, circuit DMP19 (BK), harness side.
- For Milan, measure the resistance between the video camera C4234-4, circuit (WH), harness side and the video camera C4234-2, circuit (BK), harness side.
- For Milan, measure the resistance between the video camera C4234-5, circuit (BK), harness side and the video camera C4234-2, circuit (BK), harness side.
- Is the resistance greater than 10,000 ohms?
Yes
GO to J14.
No
REPAIR the circuit in question. TEST the system for normal operation.
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J14 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE
- Connect: Negative Battery Cable.
- Ignition ON.
- For Fusion/MKZ, measure the voltage between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and ground.
- For Fusion/MKZ, measure the voltage between the video camera C4357-7, circuit RMP19 (BN/VT), harness side and ground.
- For Milan, measure the voltage between the video camera C4234-4, circuit (WH), harness side and ground.
- For Milan, measure the voltage between the video camera C4234-5, circuit (BK), harness side and ground.
- Is any voltage present?
Yes
REPAIR the circuit in question. TEST the system for normal operation.
No
GO to J15.
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J15 CHECK VIDEO SIGNAL CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect: Auto-Dimming Interior Mirror (Without Navigation) C9039.
- Disconnect: FDIM C2410 (With Navigation) .
- For Fusion/MKZ, connect a fused jumper wire between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and the video camera C4357-7, circuit RMP19 (BN/VT), harness side.
- For Milan, connect a fused jumper wire between the video camera C4234-4, circuit (WH), harness side and the video camera C4234-5, circuit (BK), harness side.
- For vehicles without navigation, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the auto-dimming interior mirror C9039-16, circuit RMP19 (BN/VT), harness side.
- For vehicles with navigation, measure the resistance between the FDIM C2410-3, circuit VMP19 (WH/GN), harness side and the FDIM C2410-9, circuit RMP19 (BN/VT), harness side.
- Are the resistances less than 5 ohms?
Yes
REMOVE the jumper wire. CARRY OUT the video camera component test. If the camera is inoperative, INSTALL a new video camera. REFER to Video Camera Service and Repair. TEST the system for normal operation. Component Test - Video Camera
No
REMOVE the jumper wire. GO to J16.
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J16 CHECK VIDEO SIGNAL CIRCUIT (+) FOR AN OPEN
- Measure the resistance between the auto-dimming interior mirror (without navigation) or the FDIM (with navigation), harness side and the video camera, harness side.
- Is the resistance less than 5 ohms?
Yes
REPAIR circuit RMP19 (BN/VT). TEST the system for normal operation.
No
REPAIR circuit VMP19 (WH/GN). TEST the system for normal operation.
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